Neil Degrasse Tyson Quotes

  • Today, the greatest threat of extinction we face is not asteroids or climate change or disease or famine. It's society's refusal to heed the warnings of scientists.Upload to Facebook
    Today, the greatest threat of extinction we face is not asteroids or climate change or disease or famine. It's society's refusal to heed the warnings of scientists.
    ~ Neil Degrasse Tyson
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